Has anyone discovered a safe solvent to get jets unplugged? With Spectra heads, one can use acetone. Is this safe for the Konica head? What do you suggest to get a head with a few jets unplugged?
Actually i never used acetone with Spectra heads, but that's a good idea. A friend of mine made a mixture for me to clean Spectra heads. It worked so well i was astounded, plus it was relatively gentle, cuz he used the same to clean his Epson heads. That mixture contained some oil-like solvents which actually never dry out just like that, they don't go away like cyclo or acetone. For the really hard work he used a mixture of cyclo with toluene (is that the name?) and some other stuff. This one really kicked butt. We also cleaned stuff with isopropyl alcohol. But i'm no chemistry guy right now so i don't remember anymore what isopropyl was used for. I know we used it to clean up electronic parts.
But my question for you is - are you using an ultrasonic shaker? Are you leaving your heads in some kind of mild solvent overnight? I know that my old Spectras seemed clean when dunked into the ultrasonic shaker, but after a night spent in that solvent i was talking about, there was even more stuff coming out, real colourful dirt ;) So i guess that the main rule about cleaning heads is not the strenght of the solvent, it is the time and patience. Nothing fast, nothing strong.
Just a point to consider as each head costs a round £700 or more that if your printer is still under waranty that you get the dealer you bought it from to sort it out.
